Is 'make check' really slowly for you? Does it take hours and hours
to complete a full three-RA-layer check?

Mike Pilato reminded me of this trick: configure APR with

./configure ... --with-devrandom=/dev/urandom ...

A Subversion built against that APR will run the test suite much
faster. I mean *MUCH* faster: it went from five or six hours (or even
worse, depending on what entropy was available to my machine) to under
half an hour.

If you've ever hesitated to do a full test run because of how long it
would take, try this. You'll never go back.

We should probably document this somewhere, I'm having trouble
figuring out where though. subversion/tests/cmdline/README?
faq.html? hacking.html?